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person76
16.12.2020 •
Mathematics
Determine whether the statement is true or false. If the statement is false, make the necessary change(s) to produce a true statement.
To solve the system below by substitution, replace y in the second equation with 7−6x.
6x−y=7
2x+y=5
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Ответ:
C = 1390
equation :
C=760+21g
Variables understanding
g = guest
c= cost
We are Finding C
If C is unknown
and c = 30.
C=760+21 x 30
C = 760+630
C = 1390